Drilling machine



`,une 14 1927.

G. H. GILMAN DRILLING MAGHINE Filed July 18 Patented June 14, 1927.

UNITED STATES PATENT OFFICE.

GEORGE H. GIIHAN, Ol' BELMONT, MASSAGHUBETTI.

DREI-'LING MACHINE.

Application led July 1B,

My invention relates to drilling machines and particularly but notexclusive] is con- Vcerned with the moving of the too of such a machinerelatively to the work.

My invention will be best understood from the following description whenread in the light of the accompanying drawingsof a specific embodimentof my invention selected for illustrative purposes while the scope of myinvention will be more particularly pointed out in the appended clalms.

In the drawings Fig. 1 is an e evation with parts broken away of amachine constructed according to my invention;

Fig. 2 is a view on an enlarged scale with parts in section and showinga detail of the machine;

Figs. 3, 4, 5 and 6 respectively are sections on the lines 3 3, 4-4,5--5 and 6-6 of Fi 1.

Refrring to the drawings, I have shown a drillin tool 1, and an actuator3 for said tool; an although these may be of any suitable or usual type,as shown I have indicated the tool as a rock drill steel and itsctilator as a fluid pressure operated hammer For feeding the toolrelative to the work I herein provide a feed cylinder 5, the feedcylinder and actuator as shown being arranged side by side and securedtogether in any suitable manner so that motion of the feed cylinder willbe imparted to the actuator and hence to the tool. As will be understoodby those skilled in the art, the actuator may comprise front and rearheads or casing sections 7, which are secured in assembled relation withthe cylinder section or other sections of the casingby means of sidebolts 9, of which I have shown four. As shown the feed cylinder 5 atopposite ends is provided with pairs of oppositely arranged perforatedears 11 through the perforations of which extend the projecting ends ofthe side bolts adjacent the feed cylinder.

As illustrated, fitting the interior of the feed cylinder I rovide afeed iston which comprises the piston proper or ead I3 and the hollowcylindrical piston rod or stopng bar 15. If desired, the bar 15 ma be ofthe same exterior diameter as the ead 13 but as shown I have formed thebar of lesser diameter in order to provide the ani921. semi No. 485,707.

cylinder. The bar 15 extends through the rear feed cylinder head 19, andin a manner hereinafter described is releasably secured to a suitablesupport herein exemplified by the arm 21 carried by the mine column 23.

Extending through the front feed c linder head 25 is a cylindrical bar 2of smaller diameter than the feed piston and telescopically arrangedtherewith. As shown, the piston is provided with the cylindrical bores29, 30 and 31. The bar 27 fits the bore 29 and at the end of the bar issecured a head 33 fitting the bore 31. The bore 30 is of diameterintermediate that of the bores 29 and 31 to provide a stop shoulder 35for the head 33 and a conduit 37 which conduit as shown by Figs. 1 and 3is placed in ermanent communication with the atmosp ere b means of a ort39. The port 39 is locate a distance rom the head 13 ap roximately equalto the length of the feed) cylinder so that irrespective of the relativepositions of the piston and feed cylinder, the air which leaks aroundthe packing 41 carried by the head 13 and around the packings 42 carriedby the head 33 will pass through the conduit 37 into the atmosphere bymeans of the port.

As shown the end of the bar 27 is provided with `a lpoint 43 for engaginthe rock or other wor and for causing t is action I herein connect theend of the bar 15 with an air hose 45 or other source of pressure fluid,the admission and exhaust of which fluid to and from the interior of thebar 15 ,is controlled by means of a three-way valve 47. When pressureiiuid is admitted into the interior of the bar 15 and the latter issecured to its support, said fluid acting on the rearward face of thehead 33 will force the point 43 firmly against the work and thus providea rigid structure along which the cylinder may be moved.

For supportin the bar 15 I have shown an attachment aving twoapproximately semi-cylindrical halves 49 and 51 adapted to be clamped tothe arm 21 by means of the bolts 53. The upper half of the attachmenthas integrally formed therewith at one side thereof a collar whichsurrounds and slidingly fits the bar 15. Integrally formed with theopposite side of the half 51 is a jaw 57, and pivoted at 61 to one endof this jaw is a cooperating jaw 59. These jaws are formed withsemi-cylindrical re-'.

cesses which fit the bar 15 and thus form a clamp for securing the barto the lattachment. For operating the clamp I have shown a screw 63'extending through the ends of the jaws remote from the pivot andthreadedly engaging the jaw 57, said screw having the shoulder 65 enga'ng the upper face of the jaw 59. In an o vious manner, by turning thescrew byeits o erating hand e 67, the bar 15 may fix y secured to theattachment, or released therefrom and slid through the collar 55.

Herein, for causing the feed cylinder to move the tool toward the work Iadmit pressure fluid to the chamber 69 of the feed cylinder, and formoving the tool away from the work I admit ressure fluid to the chamber17 of the fee cylinder. For this purpose, I have shown in the feedcylinder wall, passages 71 and 73 respectively communicating at one endwith the interior of the cylinder adjacent its forward and rearwardends, and at their o posite ends respectively communicating with thesockets 75 and 7 formed in the cylinder wall. On the side of theactuator adjacent the cylinder I have shown a pair of nipples 79 whichenter the sockets and fit therewith in a fluid-tight manner. Theactuator I have shown connected with a source of fluid pressure by meansof an air hose secured to the air hose Connection 81, and in the rearcylinder head 7 I have shown a four-way valve 83 having the operatinghandle 85 and a valve casing formlng a valve chamber 86 in permanentcommunication with a passage 87 supplied from the air hose connection.Herein this valve is arranged optionally to connect the passages 71 and73 ofthe feed cylinder altern nately to the air supply and theatmosphere. For this purpose the valve, which ma be in the form of theusual turning plug,

lierein provided with an arcuate oove 89 in permanent communication witthe passage 87 and with an axial passage 91 leading to the end of thevalve stem so as to be in permanent communication with the atmosphere.In the same planeA as the groove 89 the valve is shown as provided witha radiall passage 93 leading from the axial passa e 91 to the groove 92on the exterior of t e valve. The actuator rear cylinder head 7 is shownas provided with an inner member 95 having an exterior cylindricalsurface which in a Huid tight manner its the body portion of the headand about which are formed two grooves 97 for establishing communicationetween, respectively, passages 99 and 101 leading to the valve Casin andpassages 103 and 105 formed throng the nipples and in communication withthe sockets the nipples fit. In this manner the passage 99 is inpermanent communication with the rear feed cylinder chamber 17 and thepaage 101 in permanent communication with the forward feed cylinderchamber 69.

osition shown by i turned cloc wise from the position of Fig.

2 to move the groove 92 out of communication with the passage 101 andthe groove 89 into communication with the passage 101, pressure fluidwill be admitted to the forward end of the feed cylinder, while therearward end will be connected to the atmosphere. This will cause thefeed cylinder to move toward the work to advance the drilling tool up tothe work, after which the actuator may be put into operation to causethe hole to be drilled, the feed cylinder feeding the drill and itsactuator during the drllling operation. If it should be desired towithdraw the drill steel from the hole the valve will be moved in acounterclockwise direction past the position illustrated by Fig. 2, tomove the groove 92 out of communication with the passage 99 vand thegroove 89 of the valve into communication with the passage 99 which willexhaust the front end of the feed cylinder and admit motive fluid to therear end, and thus cause the tool to be moved away from the work. Whenthe feed cylinder.has `moved toward the work a distance equal to thefeed travel, which travel is determined by the effective length of thefeed cylinder the valve may be moved to the position of Fig. 2 and thescrew 63 may be operated to release the bar 15 from its support, and thebar then be slid through the collar 55 toward thework to the oppositeend of the feed cylinder, after which the bar may be again secured toits support and the tool again be fed Iforward a distance equal to thelength of thefeed travel. This may be repeated until the tool hasentered the work for its full length, after which it may be withdrawnfrom the hole by reversing the operation just described, or, by movingthe actuator away from the work, the tool may be removed from the chuckof the actuator, and the actuator then swung out of line with the toolto permit the latter to be withdrawn manually. f

For supporting the tool when the hole is being spotted, or when forother reasons this is necessary or desirable', I have shown means forsuspending the portion of the tool remote from the actuator from the bar27. For this purpose I have shown a clamp comprising the members 107 and109 hinged together at 111 and having1 jaws 113 adapted to engage thebar 27. T e lower portion of the members 107 and 109 I herein providewith the semi-cylindrical recesses 115, which when the jaws of themembers engage the bar provide a cylindrical opening for looselysupporting the tool. For causing relative movement between the members10 and 109 I have shown a screw 117 threadedly engaging the member 109'and having an operating handle 119 providing a shoulder 121 abuttingthe outer surface of the member 107.

In Figs. 1 and 2, I have shown a retarder for o posing motion of thefeed cylinder or for c amping the feed cylinder to the bar 15. As shownI provide a member 123 having a bore 125 fittlng over the reduceddiameter portion 127 of the rear feed cylinder head 19, and having anopening 129 fitting the bar 15. Holding the feed cylinder, the head 19and the member 123 in assembled relation I herein provide bolts 131passing through perforations in the ears 133 and 135 respectivelycarried by said member and feed cylinder. As illustrated the member 123carries a sleeve 137 which is flexible and may be formed of a tubularsection of interwoven fibers of asbestos and metal, being known to thetrade as Multabestos. The member 123 is shown as provided with a raisedportion 139 having a screw-threaded opening receiving the screw 141,said screw being provided at one end with an operating handle 143, andat its opposite end provided with a head 145 secured to the screw andfitting the bore 147 of the enlargement 139. As shown the member 123provides a chamber which surrounds the sleeve 137, and in said chamberis placed a suitable yieldable mass which, when the screw is operatedtomove the head 145 inwardly, will serve to compress the sleeve to causethe latter to rip the bar 15. This mass, hereinafter refgerred to as afluidic mass, may be any substance or structure which has the propertiesof a fluid, as for example, a liquid substance or granular structure. 'Ihave shown the mass as made up of small spheres, and providn for theirinsertion into the container affored by the member 123 I have shown thewall thereof as provided with an openin closed by the removable plug149. It wil be understood that the degree of gripping of the bar 15 bythe member 37 may be regulated by means of the screw 141.

Although I have described for illustrative purposes one specificembodiment of my invention, it will be understood that wide deviationsmay be made therefrom without departing from the spirit of my invention.

Claims.

1. A drilling machine having, in combination, an elongated supportingpart adapted to be supported at spaced points lengthwise thereof, adrill steel actuator arrangel in parallel relation to said part, meansincludmg a feed cylinder for slidably supportin said actuator on saidpart between sai spaced points, said feed cylinder being rotatable aboutthe axis of said part.

2. A drilling machine having, in combination, an elon ated -extensiblesupporting part adapted to e su ported at spaced points lengthwisethereo a `drill steel actuator arranged in arallel relation to said art,means inclu in a feed cylinder for slit ably supportin sai actuator onsaid part between sai s aced points, being rotata le about the axis ofsaid part.

3. A drilling machine having, in combination, an elongated suplportingpart comprising a pair of opposite y extending telescopically arrangedmembers each adapted to engage a suplport for rigidly supporting saidpart, a fee piston head carried by one of said members, a feed cylinderslidabl and rotatably mounted on said part an surrounding said istonhead, and a drill steel actuator carried) by said cylinder in parallelrelation thereto.

4. In a drilling machine, a longitudinally arran ed stationary support,a drill, actuator trmed for carrying a drill, means for mounting saidactuator on said support and providing for movement of said actuatoralong said sup ort and for swin ing of said actuator out o line with thedri l hole, said means comprising a cylinder on said supportintermediate the length of said support, said cylinder carryin saidactuator, and a piston adjustable lengtwise of said support cooperatingwith said cylinder.

5. In a drilling machine, a feed cylinder, a piston, connectedrelatively adjustable rods for supporting the machine extending throughopposite ends of said cylinder, one of said rods carrying said piston adrill actuator arranged to be moved by said cylinder, and means foradmitting pressure Huid to said cylinder for moving it relatively tosaid piston. Y

6. In a drilling machine, a piston, a-cylinder cooperating with saidpiston, a rod carrying said piston and exten'dinor through one end ofsaid cylinder means or supporting said rod, a second rod for supportextending throu l1 the opposite end of said cylinder and t rou h saidpiston into the first named rod, a dril actuator arranged to be moved bysaid cylinder, and means for admitting actuating Huid into saidcylinder.

7. In a drilling machine, telescopically arranged parts forming anextensible supportmg member, a piston carried thereby at an intermediateportion thereof, a c linder fitting said piston and member and eingmovable longitudinally thereof and rotatably mounted thereon, a drillactuator carried by said cylinder, means for admitting pressure fluid tosaid cylinder for moving it relative to said member, and means forlocking said cylinder in adjustable longitudinal and angular positionsrelative to said member.

8. In a drilling machine, telescopically arranged parts forming anextensible supporting member, a drill bit steel actuator,

said feed cyl inde-1' ,1

` a piston, a bar telescopically arranged with the first mentioned bar,means for releasably securin said first mentioned bar to a support, aeed cylinder surrounding said piston and each bar, and a drill actuatorcarried by saidcylinder. i y

11. In a drilling machine, a bar carrying a piston, a bar telescopicallyarranged with the first mentioned bar, means for re- 'leasably securingsaid first mentioned bar to a support, a feed' cylinder surrounding saidpiston and each bar, means for admits ting fluid pressure to said firstmentioned bar, and a drill actuator carried by said cylinder.

12. In a drilling machine, a drill actuator. telescopically arrangedmembers, one of which 1s adapted to engage the work, means for securingthe other to a sup ort, and means for moving 'said actuator a ong saidmembers.

13. In a drilling machine, a drill actuator,

a feed cylinder for moving said actuator, a

feed piston and piston rod, a rod extending into said feed cylinder andentering said piston and piston rod, meansfor causing said last namedrod to be forced resiliently against the `vvork, means releasablysecuring said piston rod to a support, and'means for admitting. pressurefluid to said c linder.

14. In a drilling machine, a dri l actuator, a feed cylinder for movinsaid actuator,

a feed piston and piston ro ,f a rod entend-v ing into said feedcylinder and entering said piston and piston rod, means for releasablysecuring said piston rod to a support, and means for admitting ressurefluld to said cylinder and to sait piston rod, whereby said actuator maybe moved relartive to the work and the said second mentioned rod may beforcedv outwardly relab tive to said piston rod to bear against asuport.

15. In a drilling machine, a drill actuator and a feed cylinder securedtogether in side by side relation, a piston and piston rod for saidcylinder, means for securin said rod to a support rearwardly of saicylinder,

and means carried by said rod for engaging a support forwardly of `saidcylinder.

16. In a drilling machine, a drill actuator and a movable feed cylindersecured together in side by side relation, a stationary piston andpiston rod slidably and rotatably su porting said cylinder, a singlevalve carried (y said actuator for admittin a pressure flui to each endof said cylin er, conduits in said actuator and cylinder for conductingsaid pressure fluid, and cooperating sockets and nipples in the adjacentsides of said cylinder and actuator establishing communication betweensaid conduits.

17. In a drilling machine, a drilll actuator and a movable feed cylindersecured together in side by side relation, passages in said cylinderleading Vto opposite ends thereof, a source of motive fluid supplyconnected to said actuator, passages provided by said actuator and incommunication with said first named passages at the adjacent sides ofsaid cylinder and actuator, and a controlling valve carried by saidactuator for connecting the passages provided by said actuator to asource of pressure fluid supply.

18. The combination with a stoper having a tool actuator and a feedingdevice comprising relatively movable cylinder and pis-A ton members, oneof which members is connected to said actuator to move the latter, of

'means for releasably securing the other member to a support; said meansand last named member providing that after the ac- ,tuator has beenmoved the effective length of the cylinder said member may upon releaseof said means, be moved relative to said support and the Work to permitthe feeding device again to operate to move said actuator in the samedirection.

19. The combination with a tool actuator of a feed cylinder and a feedpiston, means providing for movement of said actuator when said cylindermoves, and means for releasably securing said feed piston to support,whereby after thefeed cylinder has been moved relative to the work saidpiston may be released from said support and moved through said cylinderin the same direction as that in which the cylinder has been moved, andthe feed cylinder may again be moved in the same direction.

20. In a drilling machine, a drill actuator, a feed cylinder and pistonfor moving said actuator, a bar for sup orting said machine andextending throng opposite ends of aoY IUI) y nu Y said cylinder, andmeans for supporting said y 21. A drilling machine having incombination, a longitudinally extending member for supporting saidmachine, a cylinder mounted on said member for relative rotative andlongitudinal movement, a piston carried by said member and cooperatingwith said cylinder, means for admitting pressure fluid to said cylinder,a drill actuator carried by said cylinder with the axis 0f said actuatorparallel to the axis of said member, said actuator adapted for carryinga drill steel coaxialA therewith, 'and manually operable means carriedby said cylinder for gripping said member.

22. A drilling machine having in combination, a longitudinally extendingmember for supporting said machine, acylinder mounted on said member forrelative rotative and lon itudinal movement, a piston carried by saidmember and cooperating with said cylinder, means for admitting pressure{iuid to said cylinder, a drill actuator carried by said cylin er withthe axis of said actuator parallel to the axis of said member, saidactuator adapted for carrying a drill steel coaxial therewith, andmanually operable means carried by said cylinder for gripping saidmember, said last named means comprising a sleeve surrounding saidmember and iluidlc material for compressing said sleeve.

23. A drillin machine having in combination, a longitu inally extendingmember for supportin said machine, a cylinder mounted on sai member forrelative lon itudinal movement, a .piston carrie member and cooperatingwith said cyl sai inder., means for admitting pressure ui to saidcylinder, a drill actuator carrie by said cylinder with the axis oi saidactuator parallel to the axis of said member, said actuator ada ted forcarrying a drill steel coaxial therwit and means carried b said cylinderfor frictionally gripping sai member.

2a. A drilling machine having in combination, a longitudinally extendingmember for supporting said machine, a cylinder mounted on said memberfor relative 'rotative and longitudinal movement, a piston carried bysaid member and cooperating with said cylinder, means for admittingpressure iluid to said cylinder, a drill actuator car ried by saidcylinder with the axis o said actuator parallel to the axis of saidmember, said actuator adapted for carrying a for supportin drill steelcoaxial therewith, means carried by said cylinder for frictionallygripping said member, and manually operable means cooperating with saidlast named means for rendering it inoperative.

25. A drilling machine having, in combination, a supporting partcomprising a pair of telescopically arranged members one o which carriesa piston head, a feed cylinder surrounding said members and head anhaving cylinder heads at opposite ends through which said membersrespectively project, a drill actuator carried by said cylinder inparallel relation thereto, and means carried by the member projectingrou h the head at the foi'war end of said cylin er a drill steel.

26. A drilling machine having, in combination, a supporting partcomprising a pair of telescopically arranged members one o which carriesa piston head, a feed cylinder surrounding sai members and head anhaving cylinder heads at opposite ends through which said membersrespective y roject, a drill actuator carried by said inder in parallelrelation thereto, and means carried by the member projecting throur thehead at the forward end of said cylindzer for rotatably supporting adrill steel.

27. A drilling machine having, in combination, a supporting partcomprising a pair of telescopically arran ed members one c which carriesa piston cad, a feed cylinder surrounding said members and h ead anhaving cylinder heads at opposite ends through which said membersrespectively roject, a drill actuator carried by said cylinder inparallel relation thereto, said actuator for carryi g the shank of adrill steel, and a support for the drill steel forward o the front endof said actuator.

In testimony whereof, I have signed my name to this specification.

GEO. H. GILMAN.

tive and longitudinal movement, a piston carried by sai member andcooperating with said cylinder, means for admitting pressure Huid tosaid c linder, a drill actuator carried by said c lin er with the axisof said actuator paral el to the axis of said member, said actuatoradapted for carrying a drill steel coaxial therewith, and manuallyoperable means carried by said cylinder for gripping said' member, saidlast named means comprislng a sleeve surrounding said member and fluidtmaterial for compressing said sleeve.

23. A drilling machine having in combination, a longitudinally extendingmember for supporting said machine, a cylinder mounted on said memberfor relative rotative and longitudinal movement, a piston carried b saimember and cooperating with said cy inder, means for admitting pressureHuid to said cylinder, a drill actuator carried by said cylinder withthe axis of said actuator parallel to the axis of said member, saidactuator adap ed for carrying a drill steel coaxial therwit and meanscarried by said cylinder for frictionally gripping said member.

2a. A drilling machine having in combination, a longitudinally extendingmember for supporting said machine, a cylinder mounted on said memberfor relative rotatlveand longitudinal movement, a piston carrled by saidmember and cooperating with said cylinder, means for admitting pressurefluid to said cylinder, a drill actuator carried by said cylinder withthe axis of said actuator parallel to the axis of said member, saidactuator adapted for carrying a.

drill steel coaxial therewith, means carried by said cylinder forfrictionally gripping said member, and manually operable meanscooperating With said last named means for rendering it inoperative.

25. A drilling machine having, in combination, a supporting partcomprising a pair of telescopically arranged members one of whichcarries a piston head, a feed cylinder surrounding said members and headand having cylinder heads 'at opposite ends through which said membersrespectively project, a drill actuator carried by said cylinder inparallel relation thereto, and means carried by the member projectingthrough the head at the forward end of said cylinder for supporting adrill steel.

26. A drilling machine having, in combination, a supporting partcomprising a pair of telescopically arranged members one of whichcarries a piston head, a feed cylinder surrounding said members and headand having cylinder heads at opposite ends through which said membersrespectively project, a drill actuator carried by said cylinder inparallel relation thereto, and means carried by the member projectingthrough the head at the forward end of said cylinder for rotatablysupporting a drill steel. n

27. A drilling machine having, in combination, a supporting partcomprlsing a pall` of telescopically arranged members one of whichcarries a piston head, a feed cylinder surrounding said members and headand having cylinder heads at opposite ends through which said membersrespectively project, a drill actuator carried by said cylinder inparallel relation thereto, said actuator for carrying the shank of adrill steel, and a support for the drill steel forward of the front endof said actuator.

In testimony whereof, I have signed my name to this specification.

GEO. H. GILMAN.

CERTIFICATE 0F CORRECTION.

Patent No. l, 632, 400.

above numbered patent re strike out the comme nf the word "piston"Granted June 14, 1927, to

GEORGE H. GILMAN.

lt is hereby certified that error appears in the printed specificationof the insert a comma;

page 4, line 98, claim 18, after the word claim 23, for the misspelledword Letters Patent should be read with "therwith" read thesecorrections therein that the same may conquirng correction as follows:Page 3, line 86, claim 4, ter the word "drill"; same page, line 101,claim 5, Itter line 130, claim 8,' strike out the word "bitU;

"may" insert a comme; page 5, line 32,

"therewith"; and that the said form to the record of the case in thePatent Office.

Signed and sealed this` 12th day of July,

Seal.

M. J. Moore, Acting Commissioner of Patente.

CERTIFICATE OF CORRECTION.

Patent No. 1,632,400. Granted June 14, 1927, to

GEORGE H. GILMAN.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page 3,line 86, claim 4, Strike out the comme after the word "drill", samepage, line 101, claim 5, after the word "piston" insert a comma; line130, claim 8,l strike out the word "btU; page 4, line 98, claim 18,after the word "may" insert a comma; page 5, line 32, claim 23, for themisspelled word "therwth" read "therewith"; and that the said LettersPatent lhould be read with these corrections therein that the same mayconform to the record of the case in the Patent Office.

Signed and sealed this 12th day of July, A. D. 1927.

M. J. Moore, Seel. Acting Commissioner of PatentsY

